<template>
  <view class="login-container">
    <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
    <!-- open-type="getUserInfo" @getuserinfo="这里可以自定义，其他固定的"：用户授权 -->
    <button type='primary' class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
    <text class='tips-text'>登录后尽享受更多权益</text>
  </view>
</template>

<script>
  import {mapMutations,mapState} from 'vuex'
  export default {
    name:"my-login",
    data() {
      return {
        
      };
    },
    computed:{
      ...mapState('m_user',['redirectInfo'])
    },
    methods:{
      ...mapMutations('m_user',['updateUserInfo','updateToken','updateRedirectInfo']),
      // 现在可以不用授权
      // 用户授权之后，获取用户的基本信息
      getUserInfo(e){
        // console.log(e);
        if(e.detail.errMsg==='getUserInfo:fail auth deny') return uni.$showMsg('您取消了授权')
        this.updateUserInfo((e.detail.getUserInfo))

        this.getToken(e.detail)
      },
      async getToken(info){
        // 获取code对应的值
        const [err,res]=await uni.login().catch(err=>err)
        if(err || res.errMsg!=="login:ok") return uni.$showMsg('登录失败！')
        
        // 准备参数
        const query={
          code:res.code,
          encryptedData:info.encryptedData,
          iv:info.iv,
          rawData:info.rawData,
          signature:info.signature
        }
        const {data:loginResult}=await uni.$http.post('/api/public/v1/users/wxlogin',query)
        if(loginResult.meta.status !== 200) return uni.$showMsg('登录失败')
        
        // 直接把token保存到vuex中
        this.updateToken(loginResult.message.token)
        this.navigateBack()
      },
      navigateBack(){
        if(this.redirectInfo && this.redirectInfo.openType==='switchTab'){
          uni.switchTab({
            url:this.redirectInfo.from,
            complete:()=>{
              this.updateRedirectInfo(null)
            }
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .login-container{
    height:750rpx;
    background-color: #F8F8F8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    
    &::after{
      content:' ';
      display: block;
      width:100%;
      height:40px;
      background-color: white;
      position: absolute;
      bottom: 0;
      left:0;
      border-radius: 100%;
      transform: translateY(50%);
    }
    
    .btn-login{
      width:90%;
      border-radius: 100px;
      margin:15px 0;
      background-color: #C00000;
    }
    .tips-text{
      font-size: 12px;
      color: gray;
    }
  }
</style>